/*
* Copyright (c) Microsoft Corporation. All rights reserved.
* Copyright (c) 2023 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file has been modified by Huawei to verify type inference by adding verification statements.
*/

// === tests/cases/compiler/indexerReturningTypeParameter1.ts ===
declare function AssertType(value:any, type:string):void;
interface f {
    groupBy<T>(): { [key: string]: T[]; };
}
let a: f;
AssertType(a, "f");

let r = a.groupBy();
AssertType(r, "{ [string]: unknown[]; }");
AssertType(a.groupBy(), "{ [string]: unknown[]; }");
AssertType(a.groupBy, "<T>() => { [string]: T[]; }");

class c {
    groupBy<T>(): { [key: string]: T[]; } {
AssertType(null, "null");
        return null;
    }
}
let a2: c;
AssertType(a2, "c");

let r2 = a2.groupBy();
AssertType(r2, "{ [string]: unknown[]; }");
AssertType(a2.groupBy(), "{ [string]: unknown[]; }");
AssertType(a2.groupBy, "<T>() => { [string]: T[]; }");


